Forming-machine.



H. O. OBLENBSS. FORMING MACHINE. APPLICATION FILED DBO.19, 190s.

Patented July 20, 1909.

HARRY G. OBLENESS, OF ATHENS, OHIO.

FORMING-MACHINE Specification of Letters Patent.

Patented July 20, 1909.

Application filed December 19, 1908. Serial No. 468,375.

To all whom it may concern:

Be it known that I, HARRY G. OBLENEss, citizen of the United States,residing at Athens, in the county of Athens and State of Ohio, haveinvented certain new and useful Improvements in Forming-Machines, ofwhich the following is a specification.

The present invention relates to certain new and useful improvements inthe construction of those machines which are utilized for the bendingand formin of metal or like material, and the object of the invention isthe provision of a simple and inexpensive device of this characterembodying novel means for clamping the bar, or other member to beoperated upon, rigidly in position, and for bending the same in therequired manner.

The invention further contemplates a metal-forming machine which isdurable and compact in its construction, so that it can be readilytransported from place to place, and which comprises a system ofcompound levers so arranged and connected that the leverage of themachine can be varied as required.

W ith these and other objects in view that will more fully appear as thedescription proceeds, the invention consists in certain constructionsand arrangements of the parts that I shall hereinafter fully describeand claim.

For a full understanding of the invention and the merits thereof, and toacquire a knowledge of the details of construction, reference is to behad to the following description and accompanying drawing, in which:

Figure 1 is a perspective view of a metalforming machine embodying theinvention; Fig. 2 is a front elevation of the same; and, Fig. 3 is aperspective view showing a modification in which the movable jaw andform ing arm are constructed to constitute the opposite members of adie, portions of the device being removed.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawing by the samereference characters.

Specifically describing the present embodiment of the invention, thenumeral 1 designates the base which is preferably formed of metal, aclamp or vise for holding the member being operated upon, being mountedupon one side of the base, and a system of levers for bending the memberbeing mounted upon the opposite side of the base. The clamp comprises afixed jaw 2 which is preferably integral with the base, and a movablejaw 3 which is engaged by the end of a clamping screw 4 threaded in anear 5 projecting from the base. The outer or lower end of the clampingscrew l is provided with a crank handle 6, and by turning this crankhandle, the movable jaw 3 can be moved toward the fixed jaw 2 or awaytherefrom to grip the member to be operated upon, or release the same asreuired.

Pivotally mounted upon the opposite side of the base plate 1 to thatprovided with the clamp, is one end of a primary lever 7 and also oneend of a secondary lever 8. The free end of the primary lever 7 isformed with a handle 7 to which the power for operating the formingmachine is applied, and the two levers are connected by the bars orlinks 9 which are applied to the opposite sides thereof and arepivotally connected thereto by means of pins or bolts 10. These bolts 10are designed to pass through any selected one of a series of openings 11in the links 9, the upper bolt also passing through any selected one ofa series of openings 12 in' the primary lever 7, while the lower boltalso passes through any selected one of a series of openings 13 in thesecondary lever 8. In this manner, it will be obvious that the compoundleverage obtained can be readily adjusted as required by the size andnature of the member being operated upon. The secondary lever 8 isprovided at an intermediate point in its length, and preferably somewhatadjacent its pivot point, with a laterally projecting forming arm 14:which is designed to engage the member being operated upon.

In the operation of the device, the bar or other member to be bent, isclamped between the fixed jaw 2 and the movable jaw 3 of the device,with the portion thereof to be bent projecting beyond the vise and underthe levers. The primary lever 7 is then swung downwardly by manualmeans, and the forming arm 14 of the secondary lever caused to engagethe projecting end of the bar to bend the same downwardly as reuired.

It will be obvious that should it be found desirable, the movable jaw ofthe device could be so constructed as to form one of the members of adie, and the forming arm constructed so as to form the opposite memberof the die, thereby enabling the various forms and shapes to be obtainedin the finished product, as required. Such a modification is shown inFig. 3 in which the numeral 14: designates the forming arm and thenumeral 3 the movable jaw of the clamp, the said members being soconstructed as to cooperate with each other to impart the necessaryshape to the member being operated upon.

Having thus described the invention, what I claim is:

In a forming machine the combination of a base, an ear carried at onecorner of said base, a fixed jaw mounted on said base in parallel withsaid ear, a clamping screw carried by said car, a movable jaw disposedupon the inner end of said screw for 00- operation with said fixed jaw,a primary lever mounted at the opposite corner on said base, a secondarylever pivoted adjacent said primary lever on said base, a handle formed011 said primary lever to operate the same, links adj ustably disposedbetween said levers for communicating motion between the same I and aforming arm projected laterally from said secondary arm adjacent theinner end of the same for engaging a material to be operated upon.

In testimony whereof I afiix my signature in presence of two witnesses.I HARRY C. OBLENESS. [L. s.] WVitnesses:

lVEsLEY B. LAWRENCE, PERLEY B. LAWRENCE.

